DFT, molecular docking, photocatalytic and antimicrobial activity of coumarin enriched Cinnamon bark extract mediated silver nanoparticles

Water pollution is a severe and urgent issue on a global scale. Nanoparticles are capable of purifying contaminated water. Using plant extracts for green nanoparticle manufacturing minimises hazardous chemicals or energy requirements. This paper focuses on the eco-friendly synthesis of plasmonic Ag nanoparticles from cinnamon-derived natural materials and its potential in biomedicine, water treatment, and catalysis. An SPR peak confirmed the reduction of Ag+ ions to Ag-o nanoparticles at 449 nm in UV-Vis spectroscopy. The XRD and TEM analyses indicate FCC and polydisperse nanoparticles with a spherical shape. Under visible light illumination, the photocatalytic activity of plasmonic AgNPs was evaluated against Methylene Blue (MB) dye. After 120 min, plasmonic Ag NPs displayed high antibacterial activity and 97 % photo degradation efficiency. Metallic Ag NPs exhibited more catalytic activity than commercial TiO2 NPs. According to DFT experiments, coumarin in cinnamon bark reduces Ag+ ions to Ago. To the best of our knowledge, the current paper is the first to use cinnamonmediated plasmonic Ag photocatalysis for efficient antibacterial action and degradation of MB dye.

Automated summary

This study focuses on environmentally friendly synthesis of plasmonic Ag nanoparticles from cinnamon-derived natural materials and discusses their potential applications in biomedicine, water treatment, and catalysis. The research demonstrates that these nanoparticles exhibit high antibacterial and photo degradation efficiency, as well as superior catalytic activity compared to commercial TiO2 nanoparticles.